Test means for circuit breaker automatic trip mechanism

Details Test means for circuit breaker automatic trip mechanism Test means for circuit breaker automatic trip mechanism

H - Electricity

01

H

306/283

H01H 73/26 (2006.01) H01H 71/12 (2006.01) H01H 73/40 (2006.01) H01H 73/52 (2006.01)

Patent

CA 1094136

TEST MEANS FOR CIRCUIT BREAKER AUTOMATIC TRIP MECHANISM ABSTRACT OF THE DISCLOSURE A single pole molded case circuit breaker having a spring powered trip free contact operating mechanism including a releasable cradle. a latch for holding the cradle in reset position, and an automatic trip means for operating the latch to release the cradle upon the occurrence of predetermined overload conditions, is provided with test means for manually tripping the latch. The test means consists of an insulating depressible button accessible from outside the circuit breaker housing and connected directly to the latch by a formed wire link which also connects the latch to a trip member operated by ther- mal and magnetic elements of the automatic trip means.

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